I purchased the Mini Duffle which is the perfect size I will need to carry my equipment. The bag is not only ruggedly built but it is good looking. It should last me a lifetime.
My wife bought us bags, tan medium for her and grey large for me. We used them recently on a 9 day Tanzanian safari and they held most of our stuff, including clothes for a 6 day rest period in Zanzibar following. They held up well, were sturdy and protected everything even though they flew as checked baggage and were handled about 10 times with all of our flights. They are slightly scuffed and dirty, but as strong as when we were new. If I had an quibble it would be that the handles of the medium and large are rather long...the large actually hits the ground when walking when held naturally..I'm only 5'9", so beware. Also, beware that the large holds a lot of stuff...and can get heavy. But great bags all around!